1 BCN-C22005-959
FR-A800/A800 Plus Series
Instruction Manual Supplement
1 Emergency drive
This function is used in case of emergency such as a fire to forcibly continue inverter operation to drive a motor without
activating protective functions even if the inverter detects a fault. Using this function may cause damage of the motor
or the inverter because driving the motor is given the highest priority. Use this function for emergency operation only.
When the inverter is damaged by a fault, the motor operation can be continued by switching to the commercial power
supply operation.
The emergency drive function is available only for standard structure models and IP55 compatible models.
*1 The setting is available for the standard structure model and the IP55 compatible model.
*2 Set Pr.524 after setting Pr.523.
*3 When Pr.523 = "100, 200, 300, or 400", the emergency drive is activated regardless of the Pr.524 setting.
Pr. Name
Initial value
Setting range Description
FM CA
523
H320
*1
Emergency drive
mode selection
9999
100, 111, 112, 121,
122, 123, 124,
200, 211, 212, 221,
222, 223, 224,
300, 311, 312, 321,
322, 323, 324,
400, 411, 412, 421,
422, 423, 424
Select the operation mode of the emergency drive.
9999 Emergency drive disabled.
524
H321
*1*2
Emergency drive
running speed
9999
0 to 590 Hz
*3
Set the running frequency in the fixed frequency mode of
the emergency drive (when the fixed frequency mode is
selected in Pr.523)
0% to 100%
*3
Set the PID set point in the PID control mode of the
emergency drive (when the PID control mode is selected in
Pr.523)
9999
*3
Emergency drive disabled.
515
H322
*1
Emergency drive
dedicated retry
count
1
1 to 200 Set the retry count during emergency drive operation.
9999
*3
Without retry count excess (no restriction on the number of
retries).
1013
H323
*1
Emergency drive
running speed after
retry reset
60 Hz 50 Hz 0 to 590 Hz
Set the frequency for operation after a retry when any of
E.CPU, E.1 to E.3, and E.5 to E.7 occurs during emergency
drive operation.
514
H324
*1
Emergency drive
dedicated waiting
time
9999
0.1 to 600 s
Set the retry waiting time during emergency drive
operation.
9999 The Pr.68 setting is applied to the operation.
136
A001
MC switchover
interlock time
1 s 0 to 100 s Set the operation interlock time for MC2 and MC3.
139
A004
Automatic
switchover
frequency from
inverter to bypass
operation
9999
0 to 60 Hz
Set the frequency at which the inverter-driven operation is
switched over to the commercial power supply operation
when the condition for the electronic bypass is established
during emergency drive operation.
8888, 9999 Electronic bypass during emergency drive is disabled.
57
A702
Restart coasting
time
9999
0
Coasting time differs according to the inverter capacity.
(Refer to the description of the automatic restart after
instantaneous power failure function in the Instruction
Manual (Detailed) or the Instruction Manual (Function).)
0.1 to 30 s
Set the waiting time for the inverter to perform a restart after
restoring power due to an instantaneous power failure.
9999 No restart
Magnetic fluxMagnetic fluxMagnetic flux
Sensorless
Sensorless
PM
PM
BCN-C22005-959_ENG.fm 1 ページ ２０２１年４月２８日 水曜日 午後３時０分
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